Preparation of casein.



UNITED STATES vPATENT OFFICE.

EMILIO SONLINI, OF MILAN, ITALY, ASSIGNOR OF ONE-HALF TO SOCIETA DI ESPORTAZIONE POLENGHI LOMBARDO OF MILAN, ITALY. 4

PREPARATION OF CASEIN.

Specification of Letters Patent.

Patented Dec. 8, 1908.

Application filed January 24, 1907. Serial No. 353,892.

To all 2 7mm it mag concern:

Be it known that I, EMILIO ject of the King of Italy, residing in Milan, Italy, 15 YiaAndrea Ap )iani, have invented certain new and'useful mprovements in the Preparation of Casein/of which the following is .a s ecification., .& J I

This invention relates to the treatment of milk to precipitate v the casein contained therein and has particular reference to a proc-' ess of preparing casein by the additionpf sulfur clioxid to skimmed milk.

In the practice of my process I add from about 200 to 300 grams of gaseous sulfur dioxid to every 100 liters of milk and separate the casein thus precipitated, from the whey. The sulfur dioxid may be added either in a gaseous form as above referred to, or in an aqueous solution.

SoNcINI, a sub- 1 By the use of sulfur dioxid the casein is not i only more advantageouslg precipitated than 1 by rior methods but t e whey will keep fres 1 for a long time.

I 'EMILIO SQNCINI.

-Witnesses:

GmIo Lonnnnn'r; B. CARLO SALVOTI.

until the casein contained therein is precipi-- 

